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David S. Miller [Thu, 16 Feb 2006 22:26:53 +0000 (14:26 -0800)]
[SPARC64]: Add sun4v_cpu_qconf() hypervisor call.
Call it from register_one_mondo().
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 6 Mar 2006 00:46:58 +0000 (16:46 -0800)]
[SPARC]: Kill off these __put_user_ret things.
They are bogus and haven't been referenced in years.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 16 Feb 2006 10:18:49 +0000 (02:18 -0800)]
[SPARC64]: do_fptrap needs to load the thread reg into %g6.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 16 Feb 2006 09:45:49 +0000 (01:45 -0800)]
[SPARC64]: Fix bogus call to sun4v_mna in winfixup code.
The C function is named sun4v_do_mna not sun4v_mna.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 16 Feb 2006 09:41:41 +0000 (01:41 -0800)]
[SPARC64]: Fix tl1 trap state capture/dump on SUN4V.
No trap levels above 2 in privileged mode on SUN4V.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 16 Feb 2006 08:42:21 +0000 (00:42 -0800)]
[SPARC64] sunhv: Support SYSRQ properly.
By calling uart_handle_break(). We'll still do the
"sun_do_break()" handling if the user gives two
breaks in a row.
We should probably do this in the other Sparc serial
drivers too.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 16 Feb 2006 06:25:27 +0000 (22:25 -0800)]
[SPARC64] PCI: Size TSB correctly on SUN4V.
Forgot to multiply by 8 * 1024, oops. Correct the size constant when
the virtual-dma arena is 2GB in size, it should bet 256 not 128.
Finally, log some info about the TSB at probe time.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 16 Feb 2006 05:56:49 +0000 (21:56 -0800)]
[SPARC64]: Fix OOPS on sunhv interrupts.
Until the uart is openned, port->info is NULL.
Also, init the port->irq properly and give a non-zero
port->membase so that the uart device reporting is done.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 16 Feb 2006 05:21:17 +0000 (21:21 -0800)]
[SPARC64]: Don't use ASI_QUAD_LDD_PHYS on SUN4V.
Need to use ASI_QUAD_LDD_PHYS_4V instead.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 16 Feb 2006 05:16:42 +0000 (21:16 -0800)]
[SPARC64]: Do not write garbage into %pstate in tsb_context_switch().
For SUN4V, we were clobbering %o5 to do the hypervisor call.
This clobbers the saved %pstate value and we end up writing
garbage into that register as a result. Oops.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 16 Feb 2006 05:01:31 +0000 (21:01 -0800)]
[SPARC64]: Fix flush_tsb_user() on SUN4V.
Needs to use physical addressing just like cheetah_plus.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 16 Feb 2006 04:35:10 +0000 (20:35 -0800)]
[SPARC64]: Fix comment typo in __flush_tlb_kernel_range.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 16 Feb 2006 03:48:54 +0000 (19:48 -0800)]
[SPARC64]: Decode virtual-devices interrupts correctly.
Need to translate through the interrupt-map{,-mask] properties.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 15 Feb 2006 10:26:54 +0000 (02:26 -0800)]
[SPARC64]: Add prom_{start,stop}cpu_cpuid().
Use prom_startcpu_cpuid() on SUN4V instead of prom_startcpu().
We should really test for "SUNW,start-cpu-by-cpuid" presence
and use it if present even on SUN4U.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 15 Feb 2006 09:19:56 +0000 (01:19 -0800)]
[SPARC64]: Fix pci_intmap_match().
When crawling up the PCI bus chain, stop at the first node
that has an interrupt-map property before we hit the root.
Also, if we use a bus interrupt-{map,mask} do not forget to
update the 'intmask' pointer as we do for the 'intmap' pointer.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 15 Feb 2006 09:18:19 +0000 (01:18 -0800)]
[SPARC64]: Two IRQ handling fixes.
On SUN4V, force IRQ state to idle in enable_irq(). However,
I'm still not sure this is %100 correct.
Call add_interrupt_randomness() on SUN4V too.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 15 Feb 2006 08:41:47 +0000 (00:41 -0800)]
[SPARC64]: Fixup TSTATE layout diagram in asm/pstate.h
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 15 Feb 2006 08:35:50 +0000 (00:35 -0800)]
[SPARC64]: Use different cache sizing defaults on SUN4V.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 15 Feb 2006 06:20:41 +0000 (22:20 -0800)]
[SPARC64]: Make lack of interrupt-map-* a fatal error on SUN4V.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 15 Feb 2006 06:20:13 +0000 (22:20 -0800)]
[SPARC64]: Fix sun4v_intr_setenabled() return value check in enable_irq().
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 15 Feb 2006 00:44:39 +0000 (16:44 -0800)]
[SPARC64]: Explicitly init *nregs to 0 in find_device_prom_node().
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 15 Feb 2006 00:42:11 +0000 (16:42 -0800)]
[SPARC64]: Restrict PCI bus scanning on SUN4V.
On the PBM's first bus number, only allow device 0, function 0, to be
poked at with PCI config space accesses.
For some reason, this single device responds to all device numbers.
Also, reduce the verbiage of the debugging log printk's for PCI cfg
space accesses in the SUN4V PCI controller driver, so that it doesn't
overwhelm the slow SUN4V hypervisor console.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 15 Feb 2006 00:39:22 +0000 (16:39 -0800)]
[SPARC64]: Fix C-function name called by sun4v_mna trap code.
The trap code was calling itself :-)
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 15 Feb 2006 00:37:13 +0000 (16:37 -0800)]
[SPARC64]: Don't printk() any messaages in sun4v_build_irq().
It just clutters up the log.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 14 Feb 2006 22:12:44 +0000 (14:12 -0800)]
[SPARC64]: INO is never fully specified already on SUN4V.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 14 Feb 2006 21:49:32 +0000 (13:49 -0800)]
[SPARC64]: Kill sun4v_register_fault_status() on SMP.
That now gets done as a side effect of taking over the
trap table from OBP.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 14 Feb 2006 09:32:29 +0000 (01:32 -0800)]
[SPARC64]: Fix gcc-3.3.x warnings.
It doesn't like const variables being passed into
"i" constraing asm operations. It's a bug, but
there is nothing we can really do but work around
it.
Based upon a report from Andrew Morton.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 14 Feb 2006 08:55:49 +0000 (00:55 -0800)]
[SPARC64]: arch/sparc64/kernel/trampoline.S needs asm/cpudata.h
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 14 Feb 2006 06:56:27 +0000 (22:56 -0800)]
[SPARC64]: Make error codes available from sun4v_intr_get*().
And check for errors at call sites.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 14 Feb 2006 06:37:32 +0000 (22:37 -0800)]
[SPARC64]: Pass correct ino to sun4v_intr_*().
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 14 Feb 2006 06:37:07 +0000 (22:37 -0800)]
[SPARC64]: Use TRAP_LOAD_IRQ_WORK() in sun4v device mondo handler.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 14 Feb 2006 05:50:27 +0000 (21:50 -0800)]
[SPARC64]: Fix IOMMU mapping on sun4v.
We should dynamically allocate the per-cpu pglist not use
an in-kernel-image datum, since __pa() does not work on
such addresses.
Also, consistently use "u32" for devhandle.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 14 Feb 2006 05:36:30 +0000 (21:36 -0800)]
[SPARC64]: Trim down sun4v IRQ translation kernel log message.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 14 Feb 2006 05:28:40 +0000 (21:28 -0800)]
[SPARC64] sunhv: Bug fixes.
Add udelay to polling console write loop, and increment
the loop limit.
Name the device "ttyHV" and pass that to add_preferred_console()
when we're using hypervisor console.
Kill sunhv_console_setup(), it's empty.
Handle the case where we don't want to use hypervisor console.
(ie. we have a head attached to a sun4v machine)
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 14 Feb 2006 05:15:44 +0000 (21:15 -0800)]
[SPARC64]: Fix comment typo in asm/hypervisor.h
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 14 Feb 2006 04:43:02 +0000 (20:43 -0800)]
[SPARC64] sunhv: Use virtual-devices layer to get interrupt.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 14 Feb 2006 04:42:16 +0000 (20:42 -0800)]
[SPARC64]: Probe virtual-devices root node on sun4v.
This is where we learn how to get the interrupts
for things like the hypervisor console device.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 14 Feb 2006 04:41:11 +0000 (20:41 -0800)]
[SPARC64]: Kill spurious semicolon in sun4v_pci_init().
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 14 Feb 2006 04:09:10 +0000 (20:09 -0800)]
[SPARC64]: Prevent registering wrong serial console.
If the console is not for a particular Sun serial
controller, set the drv->cons to NULL.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 14 Feb 2006 02:22:57 +0000 (18:22 -0800)]
[SPARC64]: Program IRQ registers correctly on sun4v.
Need to use hypervisor calls instead of direct register
accesses.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 14 Feb 2006 02:16:10 +0000 (18:16 -0800)]
[SPARC64]: Generic sun4v_build_irq().
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 14 Feb 2006 02:09:44 +0000 (18:09 -0800)]
[SPARC64]: More SUN4V PCI work.
Get bus range from child of PCI controller root nexus.
This is actually a hack, but the PCI-E bridge sitting
at the top of the PCI tree responds to PCI config cycles
for every device number, so best to just ignore it for now.
Preliminary PCI irq routing, needs lots of work.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 14 Feb 2006 02:07:45 +0000 (18:07 -0800)]
[SPARC64]: Log faulting vaddr when bogus kernel PC detected.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 13 Feb 2006 08:23:32 +0000 (00:23 -0800)]
[SPARC64]: Implement rest of generic interrupt hypervisor calls.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 13 Feb 2006 08:02:16 +0000 (00:02 -0800)]
[SPARC64]: Move devino_to_sysino out of pci_sun4v_asm.S
It is not PCI specific, it is for all system interrupts.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 13 Feb 2006 07:49:18 +0000 (23:49 -0800)]
[SPARC64]: Range check bus number in SUN4V PCI controller driver.
It has to be somewhere in the range from pbm->pci_first_busno to
pbm->pci_last_busno, inclusive.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 13 Feb 2006 06:29:36 +0000 (22:29 -0800)]
[SPARC64]: Missing 'return' statement in sun4v_pci_init().
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 13 Feb 2006 06:18:52 +0000 (22:18 -0800)]
[SPARC64]: Implement basic pci_sun4v_scan_bus().
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 13 Feb 2006 06:06:53 +0000 (22:06 -0800)]
[SPARC64]: PCI-SUN4V fixes.
Clear top 8-bits of physical addresses in "ranges" property.
This gives the actual physical address.
Detect PBM-A vs. PBM-B by checking bit 0x40 of the devhandle.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 13 Feb 2006 05:10:07 +0000 (21:10 -0800)]
[SPARC64]: Use inline patching for critical PTE operations.
This handles the SUN4U vs SUN4V PTE layout differences
with near zero performance cost.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 13 Feb 2006 01:07:51 +0000 (17:07 -0800)]
[SPARC64]: Move PTE field definitions back into asm/pgtable.h
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sun, 12 Feb 2006 07:38:00 +0000 (23:38 -0800)]
[SPARC64]: Don't expect cfg space in PCI PBM ranges on SUN4V.
PCI cfg space is accessed transparently through the Hypervisor and not
through direct cpu PIO operations.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sun, 12 Feb 2006 07:28:40 +0000 (23:28 -0800)]
[SPARC64]: Fix branch signedness bug in all code patching.
The bug that hit SUN4V TLB patching exists elsewhere.
Make sure we cure all such cases.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sun, 12 Feb 2006 07:24:30 +0000 (23:24 -0800)]
[SPARC64]: Recognize "virtual-console" as input and output console device.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sun, 12 Feb 2006 07:22:47 +0000 (23:22 -0800)]
[SPARC64]: Do not try to synchronize %stick registers on SUN4V.
Writes by privileged code are not allowed.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sun, 12 Feb 2006 07:14:59 +0000 (23:14 -0800)]
[SPARC64]: Do not try to write to %tick or %stick on SUN4V.
Writes by privileged code are disallowed. The hypervisor manages
the non-privileged bit.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sun, 12 Feb 2006 07:07:13 +0000 (23:07 -0800)]
[SPARC64]: Fix mondo queue allocations.
We have to use bootmem during init_IRQ and page alloc
for sibling cpu calls.
Also, fix incorrect hypervisor call return value
checks in the hypervisor SMP cpu mondo send code.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sun, 12 Feb 2006 05:57:54 +0000 (21:57 -0800)]
[SPARC64]: Deal with PTE layout differences in SUN4V.
Yes, you heard it right, they changed the PTE layout for
SUN4V. Ho hum...
This is the simple and inefficient way to support this.
It'll get optimized, don't worry.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sat, 11 Feb 2006 22:41:18 +0000 (14:41 -0800)]
[SPARC64]: Register kernel TSB with hypervisor.
We do this right after we take over the trap table from OBP.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sat, 11 Feb 2006 20:21:20 +0000 (12:21 -0800)]
[SPARC64]: Fix some SUN4V TLB miss bugs.
Code patching did not sign extend negative branch
offsets correctly.
Kernel TLB miss path needs patching and %g4 register
preservation in order to handle SUN4V correctly.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sat, 11 Feb 2006 19:05:52 +0000 (11:05 -0800)]
[SPARC64]: Fix typo in sun4v_patch().
Second instruction offset is '4' not '3'.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sat, 11 Feb 2006 18:56:43 +0000 (10:56 -0800)]
[SPARC64]: Fix sun4v early bootup.
prom_sun4v_name should be "sun4v" not "SUNW,sun4v"
Also, this is too early to make use of the
.sun4v_Xinsn_patch code patching, so just check
things manually.
This gets us at least to prom_init() on Niagara.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sat, 11 Feb 2006 18:30:41 +0000 (10:30 -0800)]
[SPARC64]: Fix some Niagara memcpy() bugs.
We need to restore the %asi register properly.
For the kernel this means get_fs(), for user this
means ASI_PNF.
Also, NGcopy_to_user.S was including U3memcpy.S instead
of NGmemcpy.S, oops :-)
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sat, 11 Feb 2006 18:19:37 +0000 (10:19 -0800)]
[SPARC64]: Handle hypervisor case correctly in copy_tsb().
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sat, 11 Feb 2006 10:25:21 +0000 (02:25 -0800)]
[SPARC64]: Add SUN4V Hypervisor Console driver.
Since it can do things like BREAK and HUP, we implement
this as a serial uart driver.
This still needs interrupt probing code, as I haven't figured
out how interrupts will work or be probed for on SUN4V yet.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sat, 11 Feb 2006 09:01:55 +0000 (01:01 -0800)]
[SPARC64]: Fetch bootup time of day from Hypervisor.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sat, 11 Feb 2006 08:29:34 +0000 (00:29 -0800)]
[SPARC64]: Simplify sun4v TLB handling using macros.
There was also a bug in sun4v_itlb_miss, it loaded the
MMU Fault Status base into %g3 instead of %g2.
This pointed out a fast path for TSB miss processing,
since we have %g2 with the MMU Fault Status base, we
can use that to quickly load up the PGD phys address.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 10 Feb 2006 23:39:51 +0000 (15:39 -0800)]
[SPARC64]: Use ASI_SCRATCHPAD address 0x0 properly.
This is where the virtual address of the fault status
area belongs.
To set it up we don't make a hypervisor call, instead
we call OBP's SUNW,set-trap-table with the real address
of the fault status area as the second argument. And
right before that call we write the virtual address into
ASI_SCRATCHPAD vaddr 0x0.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 10 Feb 2006 08:08:26 +0000 (00:08 -0800)]
[SPARC64]: First cut at SUN4V PCI IOMMU handling.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 10 Feb 2006 06:57:21 +0000 (22:57 -0800)]
[SPARC64]: Fix hypervisor call arg passing.
Function goes in %o5, args go in %o0 --> %o5.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 10 Feb 2006 06:26:34 +0000 (22:26 -0800)]
[SPARC64]: Add HV_PCI_TSBID() macro.
For constructing hypervisor PCI TSB IDs.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 10 Feb 2006 06:20:01 +0000 (22:20 -0800)]
[SPARC64]: Implement SUN4V PCI config space access.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 10 Feb 2006 06:05:54 +0000 (22:05 -0800)]
[SPARC64]: More SUN4V PCI controller work.
Add assembler file for PCI hypervisor calls.
Setup basic skeleton of SUN4V PCI controller driver.
Add 32-bit devhandle to PBM struct, as this is needed for
hypervisor calls.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 10 Feb 2006 05:32:07 +0000 (21:32 -0800)]
[SPARC64]: Beginnings of SUN4V PCI controller support.
Abstract out IOMMU operations so that we can have a different
set of calls on sun4v, which needs to do things through
hypervisor calls.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 10 Feb 2006 04:46:22 +0000 (20:46 -0800)]
[SPARC64]: Fetch cpu mid properly on sun4v.
If there is a "cpuid" property, use that. Else suck
it out of the top bits of the "reg" property.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 10 Feb 2006 04:45:26 +0000 (20:45 -0800)]
[SPARC]: Clean up idprom header files.
Delete unused macros, and use fixed sized types in
sparc32 header.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 10 Feb 2006 04:20:34 +0000 (20:20 -0800)]
[SPARC64]: SUN4V memory exception trap handlers.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 10 Feb 2006 01:21:53 +0000 (17:21 -0800)]
[SPARC64]: Hypervisor TSB context switching.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 10 Feb 2006 00:12:22 +0000 (16:12 -0800)]
[SPARC64]: Implement sun4v TSB miss handlers.
When we register a TSB with the hypervisor, so that it or hardware can
handle TLB misses and do the TSB walk for us, the hypervisor traps
down to these trap when it incurs a TSB miss.
Processing is simple, we load the missing virtual address and context,
and do a full page table walk.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 9 Feb 2006 11:00:00 +0000 (03:00 -0800)]
[SPARC64]: kernel/cpu.c needs asm/spitfire.h
For 'tlb_type'.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 9 Feb 2006 10:54:54 +0000 (02:54 -0800)]
[SPARC64]: Print ARCH as SUN4V when tlb_type is hypervisor.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 9 Feb 2006 10:52:44 +0000 (02:52 -0800)]
[SPARC64]: Detect sun4v early in boot process.
We look for "SUNW,sun4v" in the 'compatible' property
of the root OBP device tree node.
Protect every %ver register access, to make sure it is
not touched on sun4v, as %ver is hyperprivileged there.
Lock kernel TLB entries using hypervisor calls instead of
calls into OBP.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 9 Feb 2006 00:41:20 +0000 (16:41 -0800)]
[SPARC64]: Sun4v cross-call sending support.
Technically the hypervisor call supports sending in a list
of all cpus to get the cross-call, but I only pass in one
cpu at a time for now.
The multi-cpu support is there, just ifdef'd out so it's easy to
enable or delete it later.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 8 Feb 2006 10:53:50 +0000 (02:53 -0800)]
[SPARC64]: Sun4v interrupt handling.
Sun4v has 4 interrupt queues: cpu, device, resumable errors,
and non-resumable errors. A set of head/tail offset pointers
help maintain a work queue in physical memory. The entries
are 64-bytes in size.
Each queue is allocated then registered with the hypervisor
as we bring cpus up.
The two error queues each get a kernel side buffer that we
use to quickly empty the main interrupt queue before we
call up to C code to log the event and possibly take evasive
action.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 8 Feb 2006 08:08:23 +0000 (00:08 -0800)]
[SPARC64]: Allocate and register the 4 sun4v mondo queues at bootup.
Needs to occur before we enable PSTATE_IE in %pstate.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 8 Feb 2006 07:51:49 +0000 (23:51 -0800)]
[SPARC64]: Verify all trap_per_cpu assembler offsets in trap_init()
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 8 Feb 2006 06:53:56 +0000 (22:53 -0800)]
[SPARC64]: Add sun4v mondo queue bases to struct trap_per_cpu.
Also, correct TRAP_PER_CPU_FAULT_INFO define, it should be
0x40 not 0x20.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 8 Feb 2006 06:49:38 +0000 (22:49 -0800)]
[SPARC64]: Fix some comment typos in asm/hypervisor.h
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 8 Feb 2006 06:13:05 +0000 (22:13 -0800)]
[SPARC64]: Patch up mmu context register writes for sun4v.
sun4v uses ASI_MMU instead of ASI_DMMU
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 8 Feb 2006 05:51:08 +0000 (21:51 -0800)]
[SPARC64]: Register per-cpu fault status area with sun4v hypervisor.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 8 Feb 2006 05:15:41 +0000 (21:15 -0800)]
[SPARC64]: asm/cpudata.h needs asm/asi.h
For the expansion of __GET_CPUID() on SMP.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 8 Feb 2006 00:09:12 +0000 (16:09 -0800)]
[SPARC64]: Niagara copy/clear page.
Happily we have no D-cache aliasing issues on these
chips, so the implementation is very straightforward.
Add a stub in bootup which will be where the patching
calls will be made for niagara/sun4v/hypervisor.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 7 Feb 2006 08:00:16 +0000 (00:00 -0800)]
[SPARC64]: Rename gl_{1,2}insn_patch --> sun4v_{1,2}insn_patch
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 7 Feb 2006 07:44:37 +0000 (23:44 -0800)]
[SPARC64]: Initial sun4v TLB miss handling infrastructure.
Things are a little tricky because, unlike sun4u, we have
to:
1) do a hypervisor trap to do the TLB load.
2) do the TSB lookup calculations by hand
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 6 Feb 2006 23:52:05 +0000 (15:52 -0800)]
[SPARC64]: Add missing memory barriers to instruction patching functions.
V9 requires a write memory barrier before the instruction flush.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 6 Feb 2006 06:27:28 +0000 (22:27 -0800)]
[SPARC64]: Sanitize %pstate writes for sun4v.
If we're just switching between different alternate global
sets, nop it out on sun4v. Also, get rid of all of the
alternate global save/restore in the OBP CIF trampoline code.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 6 Feb 2006 05:59:03 +0000 (21:59 -0800)]
[SPARC64]: Kill all %pstate changes in context switch code.
They are totally unnecessary because:
1) Interrupts are already disabled when switch_to()
runs.
2) We don't use hard-coded alternate globals any longer.
This found a case in rtrap, which still assumed alternate
global %g6 was current_thread_info(), and that is fixed
by this changeset as well.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 6 Feb 2006 05:29:28 +0000 (21:29 -0800)]
[SPARC64]: Add initial code to twiddle %gl on trap entry/exit.
Instead of setting/clearing PSTATE_AG we have to change
the %gl register value on sun4v.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 6 Feb 2006 04:47:26 +0000 (20:47 -0800)]
[SPARC64]: Fill dead cycles on trap entry with real work.
As we save trap state onto the stack, the store buffer fills up
mid-way through and we stall for several cycles as the store buffer
trickles out to the L2 cache. Meanwhile we can do some privileged
register reads and other calculations, essentially for free.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sun, 5 Feb 2006 07:59:38 +0000 (23:59 -0800)]
[SPARC64]: Add define for "GL" field of sun4v %tstate register.
Signed-off-by: David S. Miller <davem@davemloft.net>